我已经在本地Mac上设置了airflow 2.0，并以PostgreSQL的sql_alchemy_conn为后盾。我的DAG运行良好，并且在sqla数据库中维护了元数据，但是任何气流用户命令错误，但未创建角色表/视图。
我尝试设置和重置气流resetdb，但是这些表在sql_alchemy_conn DB中仍然不可用。
psycopg2.ProgrammingError: relation "ab_permission_view_role" does not exist
LINE 2: FROM ab_permission_view_role JOIN ab_permission_view ON ab_p...
[2019-01-11 11:45:58,223] {__init__.py:51} INFO - Using executor SequentialExecutor
/Users/deepaksaroha/Desktop/apache_2.0/nb-atom-airflow/lib/python3.7/site-packages/flask_sqlalchemy/__init__.py:774: UserWarning: Neither SQLALCHEMY_DATABASE_URI nor SQLALCHEMY_BINDS is set. Defaulting SQLALCHEMY_DATABASE_URI to "sqlite:///:memory:".
'Neither SQLALCHEMY_DATABASE_URI nor SQLALCHEMY_BINDS is set. '
Please make sure to build the frontend in static/ directory and restart the server
[2019-01-11 11:45:58,450] {manager.py:525} WARNING - No user yet created, use fabmanager command to do it.
[2019-01-11 11:45:59,117] {__init__.py:286} INFO - Filling …